Marine Interpretation Message
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AGPN40 KWNM 202131
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
131 PM PST SAT DEC 20 2014

.FORECAST DISCUSSION: MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT
.WEATHER FOR THE NORTH PACIFIC N OF 30N AND E OF 150W.

STG CD FNT WAS MOVG E INTO THE WA/OR WTRS THIS AFTN. THERE WAS AN
HIGH RESOLUTION ASCAT PASS FM 18Z WITH A SWATH ALG AND W OF THE
125W WHICH SHOWED GALES NR THE OR COAST. OTW WINDS WERE TO 25 KT
OVR THE WA WTRS AND TO 30 KT OVR THE OR INTO THE NRN CA WTRS.
BUOY OBS ELEVATED AT 16 FT ALG THE OR AND WRN AREAS OF THE WA/OR
WTRS HAD 25 KT WHILES GUSTS WERE NR OR ABV 34 KT IN THE PAST SVRL...BUT
SEAS WERE TO 19 FT IN THESE AREAS. PLAN TO KP GALES FOR THE NRN
AREAS OF THE WA WTRS TNGT...THEN DMNSH LATER TNGT AND SUN. BY
SUN AFTN RDG STARTS EXPANDING NWD OVR THE WA/OR WTRS WITH WINDS
DMNSHG OVR THE NRN OFFSHR WTRS AND STRENGTHENING ACRS THE CNTRL
AND SRN AREAS OF THE CA WTRS WHILE COASTAL TROF DVLPS. ECMWF/UKMET
ARE STGR WITH THE EPAC HIGH PRES LATE MON MRNG INTO THE AFTN WITH
GFS SOMEWHAT WKR. ON MON INTO TUE THERE ARE STILL TWO SLNS. THE
GFS AND UKMET CONSOLIDATE ENERGY AND STRENGTHEN LOW PRES MOVG
NE...NR OR TO THE N OF THE QUEEN CHARLOTTE ISLDS. THE ECMWF/GEM
DO NOT CONSOLIDATE THE UPR ENERGY AND HAV SEPERATE LOW PRES CNTRS
MOVG NE TOWARDS THE QUEEN CHARLOTTE ISLDS AND GLF OF AK. WL FAVOR
THE GFS/UKMET AND HAV WINDS TO 30 KT. CONFDC IS NOT HIGH WITH THIS
SYS. FM EARLY WED INTO THU GFS/ECMWF ARE SHOWING A CD FNT MOVG SE
OVR THE WTRS WITH HIGH PRES BUILDING IN FM THE WED NGT THRU THU
NGT. WL HAV MAX WINDS TO 30 KT AS COASTAL TROF REDVLPS ALG THE CA
COAST LATE WED INTO THU.

SEAS...THE 12Z WW3 MDL IS CLOSER TO THE OBS SEAS WHILE ECMWF
BRIEFLY INITIALLY IS IN AGRMT WITH DATA. PLAN TO FAVOR WWIII THRU
EARLY MON...THEN USE A BLEND OF THE WWIII AND ECMWF USING A 60/40
BLEND MON THRU THU NGT.

GRIDS...12Z 30M GFS WINDS WL BE USED FM TNGT THRU SUN...THEN WL
USE 10M GFS WNDS FOR LATER IN THE FCST PD.

.EXTRATROPICAL STORM SURGE GUIDANCE...NA.

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
.PZZ800...INNER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER...
     GALE TODAY INTO TONIGHT.
.PZZ900...OUTER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER...
     GALE TODAY INTO TONIGHT.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER ROWLAND. OCEAN PREDICTION CENTER.



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